UW Burke Herbarium species comparison

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Eleocharis atropurpurea

Eleocharis ovata

ovoid spikerush
Habit Tufted annual, the culms 0.5-5 dm. tall, ribbed, 0.5-2 mm. thick.
Leaves

Leaves all basal and reduced to sheaths.
Flowers

Spikelets ovoid, 5-13 mm. long, many-flowered;

scales of the spikelets spirally arranged, 1.7-2.5 mm. long, purplish or brownish with greenish mid-stripe and paler margins, the lowest one empty;

perianth of 6-7 brownish bristles, equaling the achene or wanting; stigmas 2 or sometimes 3.
Fruits

Achenes lenticular, 1-1.5 mm. long, straw-colored to dark brown, smooth and shining.

Eleocharis atropurpurea

Eleocharis ovata
Flowering time June-September
Habitat Marshes and other wet places, from sea level to moderate elevagtions in the mountains.
Distribution
[WildflowerSearch map]
[BONAP county map]
Occurring on both sides of the Cascades crest in Washington; British Columbia and Alberta to Oregon, also in Arizona, and from Oklahoma east to eastern North America.
[WildflowerSearch map]
Origin Native Native
Conservation status Presumed extirpated in Washington (WANHP) Not of concern
Sibling taxa
E. acicularis, E. bella, E. bolanderi, E. coloradoensis, E. engelmannii, E. erythropoda, E. geniculata, E. macrostachya, E. mamillata, E. obtusa, E. ovata, E. palustris, E. parvula, E. quinqueflora, E. rostellata, E. suksdorfiana, E. uniglumis
E. acicularis, E. bella, E. bolanderi, E. coloradoensis, E. engelmannii, E. erythropoda, E. geniculata, E. macrostachya, E. mamillata, E. obtusa, E. palustris, E. parvula, E. quinqueflora, E. rostellata, E. suksdorfiana, E. uniglumis
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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